# Autoscaling Web Application on AWS EKS

A production-grade DevOps project demonstrating cloud-native infrastructure automation and CI/CD pipelines.

Architecture

• AWS EKS — Managed Kubernetes cluster with 2 worker nodes
• Terraform — Infrastructure as Code for VPC, EKS, EC2, ALB
• Docker — Containerized Flask web application
• GitHub Actions — Automated CI/CD pipeline
• HPA — Horizontal Pod Autoscaler (scales 2-10 pods)

Tech Stack

Tool	Purpose
AWS EKS	Managed Kubernetes
Terraform	Infrastructure as Code
Docker	Containerization
GitHub Actions	CI/CD Pipeline
kubectl	Kubernetes CLI
AWS ECR	Container Registry
AWS ALB	Load Balancer

Project Structure

eks-devops-project/
├── app/
│   ├── app.py              # Flask application
│   ├── Dockerfile          # Container definition
│   └── requirements.txt
├── kubernetes/
│   ├── deployment.yaml     # K8s deployment
│   ├── service.yaml        # Load balancer service
│   └── hpa.yaml            # Autoscaler config
├── terraform/
│   ├── main.tf             # VPC + EKS infrastructure
│   ├── variables.tf        # Input variables
│   └── outputs.tf          # Output values
└── .github/
    └── workflows/
        └── deploy.yml      # CI/CD pipeline

How It Works

1. Developer pushes code to GitHub
2. GitHub Actions automatically triggers
3. Docker builds and pushes image to AWS ECR
4. kubectl deploys new version to EKS
5. HPA scales pods based on CPU/memory load

CI/CD Pipeline

Setup Instructions

# Clone the repo
git clone https://github.com/gokul-s05/eks-devops-project.git

# Initialize Terraform
cd terraform
terraform init
terraform apply

# Deploy to Kubernetes
kubectl apply -f kubernetes/